Fairchild Aerial Surveys, Inc. 
Los Angeles 15, Calif., U.S.A. 
(Aerial photography and photogrammetric mapping). 
The Oscar Fisher Company 
1000 North Division Street, 
Peekskill, New York, U.S.A. 
(Manufacturers of custom built photographic and 
chemical processing equipment). 
FRENCH PARTICIPATION 
R. Guilleminot Boespflug and Company 
22 Rue de Chateaudun, 
Paris 9, France. 
(Manufacturer of sensitized photographic plates and papers). 
Institut Géographique National (I.G.N.) 
136 bis, Rue de Grenelle, 
Paris, France. 
(French Federal Mapping Agency). 
Ministre de la Reconstruction et de l’Urbanisme 
Avenue du Parc de Passy, 
Paris, France. 
(French Federal Agency dealing with post-war reconstruction 
and city planning). 
Société Française de Stereotopographie 
57 Rue Pierre Charron, 
Paris 8, France. 
(Private ground and photogrammetric surveyors and 
geophysicists). 
Société Generale de Photo-Topographie 
26 Boulevard Voltaire, 
Paris, XI, France. 
(Private firm engaged in photogrammetric and 
ground surveying). 
Société d’Optique et de Mécanique de Haute Precision (S.O.M.) 
125 Boulevard Davout, 
Paris, XX, France. 
(Manufacturers of aerial cameras, photogrammetric 
plotting instruments, optical instruments). 
W. and L. E. Gurley 
Troy, New York, U.S.A. 
(Manufacturers of surveying and industrial precision 
instruments).